A fully automatic cryogenic instrument with a fixing device

Abstract

The present invention relates to the technical field of cryogenic instruments, and in particular to a fully automatic cryogenic instrument with a fixing device, comprising a shell, a sample grid, a lifting mechanism and a fixing mechanism; a cryogenic box is fixedly connected to the inner side wall at the top end of the shell; a sealing mechanism is arranged inside the cryogenic box; the sample grid is fixedly connected to the top end of the lifting mechanism; the fixing mechanism is installed inside the sample grid; the lifting mechanism is installed inside the shell, and comprises an electric push rod, a straight rod and a hinged rod; the electric push rod is fixedly connected to the inner side wall at the bottom end of the shell; the straight rod is fixedly connected to the outer side wall of the electric push rod; one end of the hinged rod is hinged to the straight rod, and the other end is hinged to the sealing mechanism; the fixing mechanism and the lifting mechanism are used to keep the samples in the sample grid in order, and reduce the danger of the samples falling into anhydrous ethanol.

Description

Technical Field

[0001] The invention relates to the technical field of cryogenic apparatuses, and in particular to a fully automatic cryogenic apparatus with a fixing device. Background Art

[0002] When conducting mechanical property impact tests on metal samples, the samples to be tested need to be subjected to low-temperature treatment for no less than 20 minutes in advance. Anhydrous ethanol is generally selected as the low-temperature medium. The samples are placed inside the sample grid to maintain the distance between the samples to be tested. When the low-temperature static condition is over, the samples need to be clamped from the sample grid using a clamp and the impact test is carried out within five seconds.

[0003] The surface of the existing sample grid is smooth. If more samples are placed inside the sample grid at the same time, the sliding order of the samples to be tested is easily disrupted during the static process. In addition, since the static medium is low-temperature anhydrous ethanol, there is a certain risk when using a clamp to clamp the samples. The samples are very likely to fall during the clamping process. If they fall into the low-temperature anhydrous ethanol medium, sputtering will occur, which can easily cause harm to the test personnel. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a fully automatic cryogenic apparatus with a fixing device.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: the fully automatic cryogenic instrument with a fixing device described in the present invention comprises a shell, a sample grid, a lifting mechanism and a fixing mechanism; a cryogenic box is fixedly connected to the inner side wall of the top end of the shell; a sealing mechanism is arranged inside the cryogenic box; the sample grid is fixedly connected to the top end of the lifting mechanism; the fixing mechanism is installed inside the sample grid; the lifting mechanism is installed inside the shell, and comprises an electric push rod, a straight rod and a hinged rod; the electric push rod is fixedly connected to the inner side wall of the bottom end of the shell; the straight rod is fixedly connected to the outer side wall of the electric push rod; one end of the hinged rod is connected to the The straight rod is hinged, and the other end is hinged to the sealing mechanism; when working, the product is subjected to low-temperature treatment by adding anhydrous ethanol to the low-temperature box, and the sample is placed in the sample slot when the sample grid is not moving, so that the sample will not slide randomly in the sample grid, thereby avoiding confusion of the samples placed in the sample grid, and when the sample grid is lifted and lowered, the electric push rod is started, and the lifting and lowering of the sample grid is achieved by the driving force of the electric push rod. When lifting and lowering, the sample is fixed by the fixing mechanism inside the sample grid, so that the sample will not slide during the lifting and lowering process of the sample grid.

[0006] Preferably, the sealing mechanism includes a sliding rod, an elastic rod, an extrusion block and a sealing ring; a first cavity is provided inside the low-temperature box; the sealing ring is fixedly connected to the inner side wall of the first cavity; the extrusion block is installed on the outer side wall of the sealing ring; one end of the elastic rod is rotatably connected to the inner side wall of the first cavity, and the other end is hinged to the extrusion block; the sliding rod is fixed to the end of the elastic rod away from the extrusion block; the slider is slidably connected inside the sliding rod; the hinged rod is hinged to the slider; during operation, when the electric push rod is rising, the straight rod pushes the hinged rod to extrude the slider, the slider slides, and the sliding rod drives the elastic rod to rotate in the first cavity, so that the extrusion block hinged to the elastic rod is subjected to pressure from the elastic rod, so that the extrusion block squeezes the sealing ring, so that the sealing ring is close to the side wall of the electric push rod, thereby preventing the liquid contained in the low-temperature box from leaking, so that the electric push rod has a good sealing effect during operation, thereby playing a waterproof role for the components on the inner side wall of the bottom end of the shell.

[0007] Preferably, a sample slot is provided on the inner wall at the bottom end of the sample grid; the fixing mechanism includes a transmission assembly, a rectangular block, a first slide groove and a fixed rod; the transmission assembly is installed inside the sample grid; the rectangular block is fixedly connected to the inside of the sample fence, and its inner wall is slidably connected to a slide plate, and a pushing assembly is arranged inside; the first slide groove is arranged on the inner wall of the sample slot; the fixed rod is slidably connected inside the first slide groove; during operation, when the electric push rod moves, it drives the transmission assembly to move, so that the slide plate slides inside the rectangular block, and the side wall of the slide plate is connected to the pushing assembly by a thin rope, driving the pushing assembly to move, so that the fixed rod slidably connected inside the first slide groove slides out, thereby squeezing the side wall of the sample piece, ensuring the stability of the sample during the lifting process, thereby avoiding the sample from sliding during the lifting process.

[0008] Preferably, the transmission assembly includes a second slide groove, a first air bag and an extrusion plate; the second slide groove is arranged inside the side wall of the sample grid; the first air bag is fixedly connected to the side wall of the second slide groove and communicated with the inside of the rectangular block; the extrusion plate is slidably connected inside the second slide groove, and its side wall is connected to the inner wall of the low-temperature box through an elastic rope; during operation, when the electric push rod moves, the elastic rope connected to the side wall of the extrusion plate is tightened, thereby pulling the extrusion plate to slide in the second slide groove, and during the sliding process of the extrusion plate, the extrusion plate squeezes the first air bag, so that the gas in the first air bag pushes the slide plate to slide, thereby driving the pushing assembly to work, so that the top rod in the first slide groove fixes the sample, so that the sample will not slide during the rising process, thereby ensuring the orderliness of the sample inside the sample grid.

[0009] Preferably, the pushing assembly includes a push rod, a trapezoidal block and a second airbag; the push rod is slidably connected to the inside of the rectangular block through a spring; the trapezoidal block is slidably connected to the inner wall of the rectangular block, and its top end is connected to the slide plate through a thin rope; the second airbag is fixed to the inner wall of the rectangular block and connected to the inside of the first slide groove; during operation, when the transmission assembly pushes the slide plate to slide, the thin rope connected to the side wall of the slide plate pulls the trapezoidal block to slide up, and under the elastic force of the spring, the push rod slides inside the rectangular block, and the push rod squeezes the second airbag, so that the gas in the second airbag is ejected from the first slide groove, pushing the fixing rod to slide, thereby fixing the sample.

[0010] Preferably, a third slide groove and a fourth slide groove are provided inside the side wall of the low-temperature box; a third airbag is fixedly connected to the inner side wall of the third slide groove and is slidably connected to a rectangular plate; the third airbag is communicated with the inside of the fourth slide groove; the rectangular plate is slidably connected to the inside of the third slide groove, and its side wall is fixedly connected to a limiting rope; the other end of the limiting rope is fixedly connected to the inner side wall of the low-temperature box; a T-shaped rod is slidably connected to the fourth slide groove; during operation, when the sample grid rises to a certain height, the sample grid squeezes the limiting rope, so that the limiting rope pulls the rectangular plate in the third slide groove to slide, thereby causing the rectangular plate to squeeze the third airbag, and the gas in the third airbag is ejected from the fourth slide groove, thereby pushing the T-shaped rod to move, and the thin rope at the top of the T-shaped rod pulls the switch, thereby cutting off the power to the electric push rod, and then controlling the movement of the electric push rod.

[0011] Preferably, the electric push rod is connected to line 1 and line 2; the end of the T-shaped rod is connected to the knife switch through a thin rope; during operation, when the sample grid needs to be raised, the knife switch is closed, so that the electric push rod is energized and moves, thereby pushing the sample grid to rise. When the sample grid rises to a certain height, the electric push rod is powered off through the action of the limiting rope, thereby achieving control of the electric push rod, making the lifting and lowering of the sample grid more intelligent and reducing the workload of manual operation.

[0012] Preferably, a rubber block is fixedly connected to the end of the fixing rod; during operation, when the sample grid is in the process of rising, the sample is fixed by the fixing mechanism to avoid sample confusion caused by sample sliding during the rising process. The rubber block fixedly connected to the end of the fixing rod can reduce the wear between the fixing rod and the sample, and the rubber has a certain anti-slip effect, so that the fixing rod and the side wall of the sample will not slip, thereby making the fixing effect better.

[0013] Preferably, a second cavity and a fifth slide groove are provided inside the bottom end of the low-temperature box; a rectangular flat plate is fixedly connected to the inner side wall of the second cavity; a T-shaped plate is slidably connected to the fifth slide groove, and a water bag is fixedly connected to the inner side wall; lubricating oil is provided inside the water bag; during operation, when the T-shaped plate is squeezed, the T-shaped plate slides, so that the T-shaped plate squeezes the water bag on the inner side wall of the fifth slide groove, so that the water bag is squeezed and the lubricating oil inside is sprayed out from the nozzle, thereby lubricating the side wall of the electric push rod to ensure its smooth operation.

[0014] Preferably, a lubrication groove is provided inside the low-temperature box; a nozzle is fixedly connected to the side wall of the lubrication groove; the nozzle is connected to the inside of the water bag; a round rod is fixedly connected to the side wall of the electric push rod; a square block is slidably connected to the inside of the rectangular flat plate; a rocker arm is hinged on the side wall of the round rod; the other end of the rocker arm is hinged to the side wall of the square block; when working, when the electric push rod is lifted, it drives the round rod to rise, so that the rocker arm hinged on the side wall of the round rod swings, thereby driving the square block to slide inside the rectangular flat plate, so that the square block squeezes the T-shaped plate, thereby lubricating the electric push rod.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the fully automatic cryogenic instrument with a fixing device described in the present invention, when the transmission assembly pushes the slide plate to slide, the thin rope connected to the side wall of the slide plate pulls the trapezoidal block to slide upward, and under the elastic force of the spring, the push rod slides inside the rectangular block, and the push rod squeezes the second airbag, so that the gas in the second airbag is ejected from the first slide groove, pushing the fixing rod to slide, thereby fixing the sample, ensuring the orderliness of the sample inside the sample grid.

[0017] 2. In the fully automatic cryogenic instrument with a fixing device described in the present invention, when the electric push rod is rising, the straight rod pushes the hinged rod to squeeze the sliding block, the sliding block slides, and the sliding rod drives the elastic rod to rotate in the first cavity, so that the extrusion block hinged to the elastic rod is subjected to pressure from the elastic rod, so that the extrusion block squeezes the sealing ring, so that the sealing ring is tightly attached to the side wall of the electric push rod, so that the electric push rod has a good sealing effect during operation.

[0018] 3. When the sample grid rises to a certain height, the sample grid squeezes the limit rope, so that the limit rope pulls the rectangular plate in the third slide groove to slide, thereby causing the rectangular plate to squeeze the third airbag, and the gas in the third airbag is ejected from the fourth slide groove, thereby pushing the T-shaped rod to move. The thin rope at the top of the T-shaped rod pulls the switch, thereby cutting off the power to the electric push rod, thereby controlling the movement of the electric push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is an overall diagram of a fully automatic cryogenic apparatus with a fixing device of the present invention;

[0021] Figure 2 It is a partial cross-sectional view of a fully automatic cryogenic apparatus with a fixing device according to the present invention;

[0022] Figure 3 is a partial cross-sectional view of the sample grid;

[0023] Figure 4 yes Figure 2 A partial enlarged view of the middle part;

[0024] Figure 5 yes Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle;

[0026] Figure 7 yes Figure 3 A partial enlarged view of point D in the middle;

[0027] Figure 8 yes Figure 2 A partial enlarged view of point E in the middle;

[0028] In the figure: 1, housing; 2, sample grid; 21, sample slot; 3, lifting mechanism; 31, electric push rod; 311, line 1; 312, line 2; 32, straight rod; 33, hinged rod; 34, round rod; 35, swing rod; 4, fixing mechanism; 41, transmission assembly; 411, second slide; 412, first airbag; 413, extrusion plate; 42, rectangular block; 43, first slide; 44, fixing rod; 441, rubber block; 45, slide plate; 46, pushing assembly; 461, top rod; 4 62. trapezoidal block; 463. second airbag; 5. cryogenic box; 51. first cavity; 52. third slide; 53. fourth slide; 54. third airbag; 55. rectangular plate; 56. limit rope; 57. T-bar; 6. sealing mechanism; 61. slide bar; 62. slider; 63. elastic rod; 64. extrusion block; 65. sealing ring; 7. second cavity; 71. rectangular flat plate; 711. square block; 8. fifth slide; 81. T-plate; 82. water bag; 9. lubrication groove; 91. nozzle. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 8As shown, a fully automatic cryogenic instrument with a fixing device described in the present invention comprises a shell 1, a sample grid 2, a lifting mechanism 3 and a fixing mechanism 4; a cryogenic box 5 is fixedly connected to the inner side wall at the top end of the shell 1; a sealing mechanism 6 is arranged inside the cryogenic box 5; the sample grid 2 is fixedly connected to the top end of the lifting mechanism 3; the fixing mechanism 4 is installed inside the sample grid 2; the lifting mechanism 3 is installed inside the shell 1, and comprises an electric push rod 31, a straight rod 32 and a hinged rod 33; the sample grid 2 is fixedly connected to the top end of the electric push rod 31; the electric push rod 31 is fixedly connected to the inner side wall at the bottom end of the shell 1; the straight rod 32 is fixedly connected to the outer side wall of the electric push rod 31; the hinged rod One end of 33 is hinged to the straight rod 32, and the other end is hinged to the sealing mechanism 6; when working, anhydrous ethanol is added to the low-temperature box 5 to perform low-temperature treatment on the product. When the sample grid 2 is not moving, the sample is placed in the sample slot 21, so that the sample will not slide randomly in the sample grid 2, thereby avoiding confusion of the samples placed in the sample grid 2. When the sample grid 2 is lifted and lowered, the electric push rod 31 is started, and the lifting and lowering of the sample grid 2 is achieved by the driving force of the electric push rod 31. When lifting and lowering, the sample is fixed by the fixing mechanism 4 inside the sample grid 2, so that the sample will not slide during the lifting and lowering process of the sample grid 2.

[0031] As an embodiment of the present invention, the sealing mechanism 6 includes a slide bar 61, an elastic rod 63, an extrusion block 64 and a sealing ring 65; a first cavity 51 is provided inside the low temperature box 5; the sealing ring 65 is fixedly connected to the inner wall of the first cavity 51; the extrusion block 64 is installed on the outer wall of the sealing ring 65; one end of the elastic rod 63 is rotatably connected to the inner wall of the first cavity 51, and the other end is hinged to the extrusion block 64; the slide bar 61 is fixedly connected to the end of the elastic rod 63 away from the extrusion block 64; the slider 62 is slidably connected to the inside of the slide bar 61; the hinged rod 33 is hinged to the slider 62 During operation, when the electric push rod 31 is rising, the straight rod 32 pushes the hinged rod 33 to squeeze the slider 62, and the slider 62 slides, and the slider 61 drives the elastic rod 63 to rotate in the first cavity 51, so that the squeezing block 64 hinged to the elastic rod 63 is subjected to the pressure from the elastic rod 63, so that the squeezing block 64 squeezes the sealing ring 65, so that the sealing ring 65 is close to the side wall of the electric push rod 31, thereby preventing the liquid contained in the low-temperature box 5 from leaking, so that the electric push rod 31 has a good sealing effect during operation, thereby playing a waterproof role for the components on the inner wall of the bottom end of the shell 1.

[0032] As an embodiment of the present invention, a sample slot 21 is provided on the inner side wall of the bottom end of the sample grid 2; the fixing mechanism 4 includes a transmission component 41, a rectangular block 42, a first slide groove 43 and a fixing rod 44; the transmission component 41 is installed inside the sample grid 2; the rectangular block 42 is fixedly connected to the inside of the sample grid 2, and a slide plate 45 is slidably connected to its inner side wall, and a pushing component 46 is arranged inside; the first slide groove 43 is arranged on the inner side wall of the sample slot 21; the fixing rod 44 is slidably connected inside the first slide groove 43; during operation, when the electric push rod 31 moves, it drives the transmission component 41 to move, so that the slide plate 45 slides inside the rectangular block 42, and the side wall of the slide plate 45 is connected to the pushing component 46 by a thin rope, driving the pushing component 46 to move, so that the fixing rod 44 slidably connected inside the first slide groove 43 slides out, thereby squeezing the side wall of the sample piece, ensuring the stability of the sample during the lifting process, thereby preventing the sample from sliding during the lifting process.

[0033] As an embodiment of the present invention, the transmission assembly 41 includes a second slide groove 411, a first air bag 412 and an extrusion plate 413; the second slide groove 411 is arranged inside the side wall of the sample grid 2; the first air bag 412 is fixedly connected to the side wall of the second slide groove 411 and communicated with the inside of the rectangular block 42; the extrusion plate 413 is slidably connected inside the second slide groove 411, and its side wall is connected to the inner wall of the low-temperature box 5 through an elastic rope; during operation, when the electric push rod 31 moves, the elastic rope connected to the side wall of the extrusion plate 413 is tightened, thereby pulling the extrusion plate 413 to slide in the second slide groove 411, and during the sliding process of the extrusion plate 413, the extrusion plate 413 squeezes the first air bag 412, so that the gas in the first air bag 412 pushes the slide plate 45 to slide, thereby driving the pushing assembly 46 to work, so that the push rod 461 in the first slide groove 43 fixes the sample, so that the sample does not slide during the rising process, thereby ensuring the orderliness of the sample inside the sample grid 2.

[0034] As an embodiment of the present invention, the pushing component 46 includes a push rod 461, a trapezoidal block 462 and a second air bag 463; the push rod 461 is slidably connected to the inside of the rectangular block 42 through a spring; the trapezoidal block 462 is slidably connected to the inner wall of the rectangular block 42, and its top end is connected to the slide plate 45 through a thin rope; the second air bag 463 is fixed to the inner wall of the rectangular block 42 and is connected to the inside of the first slide groove 43; during operation, when the transmission component 41 pushes the slide plate 45 to slide, the thin rope connected to the side wall of the slide plate 45 pulls the trapezoidal block 462 to slide up, and under the elastic force of the spring, the push rod 461 slides inside the rectangular block 42, and the push rod 461 squeezes the second air bag 463, so that the gas in the second air bag 463 is ejected from the first slide groove 43, pushing the fixing rod 44 to slide, thereby fixing the sample.

[0035] As an embodiment of the present invention, a third slide groove 52 and a fourth slide groove 53 are provided inside the side wall of the low temperature box 5; a third airbag 54 is fixedly connected to the inner side wall of the third slide groove 52, and a rectangular plate 55 is slidably connected thereto; the third airbag 54 is communicated with the inside of the fourth slide groove 53; the rectangular plate 55 is slidably connected inside the third slide groove 52, and a limiting rope 56 is fixedly connected to its side wall; the other end of the limiting rope 56 is fixedly connected to the inner side wall of the low temperature box 5; a T-shaped rod 57 is slidably connected inside the fourth slide groove 53; during operation, when the sample grid 2 rises to a certain height, the sample grid 2 squeezes the limiting rope 56, so that the limiting rope 56 pulls the rectangular plate 55 in the third slide groove 52 to slide, thereby squeezing the third airbag 54, and the gas in the third airbag 54 is ejected from the fourth slide groove 53, thereby pushing the T-shaped rod 57 to move, and the thin rope at the top of the T-shaped rod 57 pulls the switch, thereby cutting off the power to the electric push rod 31, thereby controlling the movement of the electric push rod 31.

[0036] As an embodiment of the present invention, the electric push rod 31 is connected to the first line 311 and the second line 312; the end of the T-shaped rod 57 is connected to the knife switch through a thin rope; during operation, when the sample grid 2 needs to be raised, the knife switch is closed, so that the electric push rod 31 is energized and moves, thereby pushing the sample grid 2 to rise. When the sample grid 2 rises to a certain height, the electric push rod 31 is powered off through the action of the limiting rope 56, thereby realizing the control of the electric push rod 31, thereby making the lifting and lowering of the sample grid 2 more intelligent and reducing the workload of manual operation.

[0037] As an embodiment of the present invention, a rubber block 441 is fixedly connected to the end of the fixing rod 44; during operation, when the sample grid is in the process of rising, the sample is fixed by the fixing mechanism 4 to avoid sample confusion caused by sample sliding during the rising process. The rubber block 441 fixed to the end of the top rod 461 reduces the wear between the top rod 461 and the sample, and the rubber has a certain anti-slip effect, so that the top rod 461 and the side wall of the sample will not slip, thereby making the fixing effect better.

[0038] As an embodiment of the present invention, a second cavity 7 and a fifth slide groove 8 are provided inside the bottom end of the low-temperature box 5; a rectangular flat plate 71 is fixedly connected to the inner wall of the second cavity 7; a T-shaped plate 81 is slidably connected to the fifth slide groove 8, and a water bag 82 is fixedly connected to the inner wall; lubricating oil is provided inside the water bag 82; during operation, when the T-shaped plate 81 is squeezed, the T-shaped plate 81 slides, so that the T-shaped plate 81 squeezes the water bag 82 on the inner wall of the fifth slide groove 8, so that the water bag 82 is squeezed and the internal lubricating oil is sprayed out from the nozzle 91, thereby lubricating the side wall of the electric push rod 31 to ensure its smooth operation.

[0039] As an embodiment of the present invention, a lubrication groove 9 is provided inside the low-temperature box 5; a nozzle 91 is fixedly connected to the side wall of the lubrication groove 9; the nozzle 91 is connected to the inside of the water bag 82; a round rod 34 is fixedly connected to the side wall of the electric push rod 31; a square block 711 is slidably connected inside the rectangular flat plate 71; a rocker arm 35 is hinged on the side wall of the round rod 34; the other end of the rocker arm 35 is hinged to the side wall of the square block 711; when working, when the electric push rod 31 is lifted and lowered, it drives the round rod 34 to rise, so that the rocker arm 35 hinged on the side wall of the round rod 34 swings, thereby driving the square block 711 to slide inside the rectangular flat plate 71, so that the square block 711 squeezes the T-shaped plate 81, thereby lubricating the electric push rod 31.

[0040] Working principle: by adding anhydrous ethanol to the low temperature box 5, the product is subjected to low temperature treatment. When the sample grid 2 is not moving, the sample is placed in the sample slot 21, so that the sample will not slide randomly in the sample grid 2, thereby avoiding confusion of the samples placed in the sample grid 2. When the sample grid 2 is lifted and lowered, the electric push rod 31 is started, and the lifting and lowering of the sample grid 2 is achieved by the driving force of the electric push rod 31. When lifting and lowering, the elastic rope connected to the side wall of the squeezing plate 413 is tightened, thereby pulling the squeezing plate 413 to slide in the second slide groove 411. During the sliding process of the squeezing plate 413, the squeezing plate 413 squeezes the first air bag 412, so that the gas in the first air bag 412 is discharged from the rectangular block 4 2 is ejected from the inside, thereby pushing the slide plate 45 to slide. The side wall of the slide plate 45 is connected to the pushing assembly 46 through a thin rope, so that the thin rope connected to the side wall of the slide plate 45 pulls the trapezoidal block 462 to slide up. When the trapezoidal block 462 slides up, under the elastic force of the spring, the push rod 461 slides inside the rectangular block 42, so that the push rod 461 squeezes the second air bag 463 fixed to the inner wall of the rectangular block 42, so that the gas in the second air bag 463 is ejected from the first slide groove 43, thereby pushing the fixing rod 44 to slide, and then fixing the sample. When the push rod 461 is fixing the sample, the rubber block 441 fixed to its end has the function of reducing the wear between the push rod 461 and the sample, and The rubber has a certain anti-skid effect, so that the push rod 461 and the side wall of the sample will not slip, thereby making the fixing effect better; and when the electric push rod 31 rises, the straight rod 32 is driven to rise, so that the hinged rod 33 squeezes the slider 62, so that the slider 62 slides inside the slider 61, and when the slider 62 slides, the slider 61 drives the elastic rod 63 to rotate in the first cavity 51, so that the squeezing block 64 hinged to the elastic rod 63 is subjected to the pressure from the elastic rod 63, thereby squeezing the squeezing block 64, so that the squeezing block 64 squeezes the sealing ring 65, so that the sealing ring 65 is close to the side wall of the electric push rod 31, thereby preventing the liquid contained in the low-temperature box 5 from slipping. The leakage is prevented, so that the electric push rod 31 has a good sealing effect during operation, thereby playing a waterproof role for the components on the inner wall of the bottom end of the shell 1; when the sample grid 2 rises to a certain height, the sample grid 2 squeezes the limiting rope 56, so that the limiting rope 56 pulls the rectangular plate 55 in the third slide groove 52 to slide, so that the rectangular plate 55 squeezes the third air bag 54, and the gas in the third air bag 54 is ejected from the fourth slide groove 53, thereby pushing the T-shaped rod 57 to move. During the movement of the T-shaped rod 57, the thin rope at the top of the T-shaped rod 57 pulls the switch, thereby cutting off the power of the electric push rod 31, and then controlling the movement of the electric push rod 31, making the lifting and lowering of the sample grid 2 more intelligent, and reducing the workload of manual operation.

[0041] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fully automatic cryogenic apparatus with a fixing device, characterized in that: The invention comprises a shell (1), a sample grid (2), a lifting mechanism (3) and a fixing mechanism (4); a low temperature box (5) is fixedly connected to the inner side wall at the top end of the shell (1); a first cavity (51) is provided inside the low temperature box (5), and a sealing mechanism (6) is provided inside the low temperature box (5); the sample grid (2) is fixedly connected to the top end of the lifting mechanism (3); the fixing mechanism (4) is installed inside the sample grid (2); the lifting mechanism (3) is installed inside the shell (1), and comprises an electric push rod (31), a straight rod (32) and a hinged rod (33); the sample grid (2) is fixedly connected to the top end of the electric push rod (31); the electric push rod (31) is fixedly connected to the inner side wall at the bottom end of the shell (1); the straight rod (32) is fixedly connected to the outer side wall of the electric push rod (31); one end of the hinged rod (33) is hinged to the straight rod (32), and the other end is hinged to the sealing mechanism (6); The fixing mechanism (4) comprises a transmission assembly (41), a rectangular block (42), a first slide groove (43) and a fixing rod (44); the transmission assembly (41) is installed inside the sample grid (2); the rectangular block (42) is fixed inside the sample grid (2), and a slide plate (45) is slidably connected to its inner side wall, and a pushing assembly (46) is arranged inside. When the electric push rod (31) moves, the transmission assembly (41) is driven to move, so that the slide plate (45) slides inside the rectangular block (42); the side wall of the slide plate (45) is connected to the pushing assembly (46) by a thin rope, and the pushing assembly (46) is driven to move, so that the fixing rod (44) slidably connected inside the first slide groove (43) slides out.

2. A fully automatic cryostat with a fixing device according to claim 1, characterized in that: The sealing mechanism (6) comprises a sliding rod (61), a slider (62), an elastic rod (63), an extrusion block (64) and a sealing ring (65); a first cavity (51) is provided inside the low-temperature box (5); the sealing ring (65) is fixedly connected to the inner wall of the first cavity (51); the extrusion block (64) is installed on the outer wall of the sealing ring (65); one end of the elastic rod (63) is rotatably connected to the inner wall of the first cavity (51), and the other end is hinged to the extrusion block (64); the sliding rod (61) is fixedly connected to the end of the elastic rod (63) away from the extrusion block (64); the slider (62) is slidably connected inside the sliding rod (61); the hinged rod (33) is hinged to the slider (62).

3. A fully automatic cryostat with a fixing device according to claim 2, characterized in that: The inner side wall at the bottom of the sample grid (2) is provided with a sample groove (21); the first slide groove (43) is arranged on the inner side wall of the sample groove (21); and the fixing rod (44) is slidably connected inside the first slide groove (43).

4. A fully automatic cryostat with a fixing device according to claim 3, characterized in that: The transmission assembly (41) comprises a second slide groove (411), a first air bag (412) and an extrusion plate (413); the second slide groove (411) is arranged inside the side wall of the sample grid (2); the first air bag (412) is fixedly connected to the side wall of the second slide groove (411) and communicated with the inside of the rectangular block (42); the extrusion plate (413) is slidably connected inside the second slide groove (411), and its side wall is connected to the inner wall of the low-temperature box (5) through an elastic rope.

5. A fully automatic cryostat with a fixing device according to claim 4, characterized in that: The pushing assembly (46) comprises a push rod (461), a trapezoidal block (462) and a second air bag (463); the push rod (461) is slidably connected to the inside of the rectangular block (42) via a spring; the trapezoidal block (462) is slidably connected to the inner wall of the rectangular block (42), and its top end is connected to the slide plate (45) via a thin rope; the second air bag (463) is fixedly connected to the inner wall of the rectangular block (42) and communicated with the inside of the first slide groove (43).

6. A fully automatic cryostat with a fixing device according to claim 5, characterized in that: The side wall of the low-temperature box (5) is provided with a third slide groove (52) and a fourth slide groove (53); the inner wall of the third slide groove (52) is fixedly connected with a third air bag (54) and is slidably connected with a rectangular plate (55); the third air bag (54) is communicated with the inside of the fourth slide groove (53); the rectangular plate (55) is slidably connected inside the third slide groove (52), and its side wall is fixedly connected with a limiting rope (56); the other end of the limiting rope (56) is fixedly connected with the inner wall of the low-temperature box (5); the fourth slide groove (53) is slidably connected with a T-shaped rod (57).

7. A fully automatic cryostat with a fixing device according to claim 6, characterized in that: The electric push rod (31) is connected to a first line (311) and a second line (312); the end of the T-shaped rod (57) is connected to a switch through a thin rope.

8. A fully automatic cryostat with a fixing device according to claim 7, characterized in that: A rubber block (441) is fixedly connected to the end of the fixing rod (44).

9. A fully automatic cryostat with a fixing device according to claim 8, characterized in that: A second cavity (7) and a fifth slide groove (8) are provided inside the bottom end of the low-temperature box (5); a rectangular flat plate (71) is fixedly connected to the inner wall of the second cavity (7); a T-shaped plate (81) is slidably connected inside the fifth slide groove (8), and a water bag (82) is fixedly connected to the inner wall; and lubricating oil is provided inside the water bag (82).

10. A fully automatic cryogenic apparatus with a fixing device according to claim 9, characterized in that: A lubrication groove (9) is provided inside the low-temperature box (5); a nozzle (91) is fixedly connected to the side wall of the lubrication groove (9); the nozzle (91) is connected to the inside of the water bag (82); a round rod (34) is fixedly connected to the side wall of the electric push rod (31); a square block (711) is slidably connected inside the rectangular flat plate (71); a swing rod (35) is hinged on the side wall of the round rod (34); the other end of the swing rod (35) is hinged to the side wall of the square block (711).

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